What is steel pipe? Characteristics and applications of steel pipe in life
Iron and steel are one of the important construction materials that are indispensable in every construction and mechanical engineering project. However, there are many different types of steel today, of which “steel pipe” is the material used in most projects. To better understand “steel pipe”, Trung Dung Steel will help you have a more general view through the following article:
1. What is steel pipe?
Steel pipe, also known as round steel box, is a type of steel designed with a hollow structure, thin walls with a circular shape, quite light weight, good durability along with an additional protective layer on the outside, contributing to increasing the durability and shine of the product.

2. Characteristics of steel pipes
High Durability: Steel pipes have good bearing capacity, are durable and stable under different pressure and temperature conditions.
Corrosion Resistance: Steel pipes are galvanized or painted to prevent corrosion, suitable for outdoor applications and in harsh environments.
Easy to Process: Steel pipes can be cut, welded, and bent easily, suitable for many types of constructions and applications.
3. Classification of steel pipes
Currently, there are many different types of steel pipes on the market to meet more usage needs. The most popular are the following 5 types of steel pipes:
3.1 Hot-dip galvanized steel pipes: This is one of the types of round steel pipes with a hot-dip galvanized coating on the outside to help increase the durability of the product, helping the material avoid rust and oxidation on the surface. At the same time, this galvanized coating contributes to increasing the life of the steel bar and the solidity of the construction.
Features:
High corrosion resistance: The protective zinc layer helps the steel pipe resist corrosion caused by exposure to water, air and other environmental factors. This makes hot-dip galvanized steel pipes very durable and can be used in harsh environments.
High durability: Hot-dip galvanized steel pipes have high tensile strength and good bearing capacity, suitable for applications requiring mechanical strength.
Long service life: Thanks to the zinc coating, steel pipes have a longer service life than non-galvanized steel, minimizing maintenance and replacement costs.
Comprehensive protection: The hot-dip process ensures that the zinc layer is evenly coated both inside and outside the pipe, providing comprehensive protection against corrosion.
Self-healing ability: The zinc layer has the ability to protect scratches or minor damage by creating a new protective layer when corroded, continuing to protect the steel from environmental penetration.
Easy to process:Hot-dip galvanized steel pipes can be easily cut, bent, welded and processed without losing the protective properties of the zinc layer.
Rectangular and square steel pipes: These types of square steel pipes are often used in the construction scaffolding industry, making prefabricated house structures or roof frames.
Diverse sizes and thicknesses: Rectangular steel pipes and square steel pipes come in many different sizes and thicknesses, suitable for many different uses.
High durability: Both rectangular steel pipes and square steel pipes have high tensile strength and hardness, can withstand large loads and strong impacts.
Easy to process and install: Rectangular steel pipes and square steel pipes are easy to cut, weld, bend and process according to the requirements of each specific application.
Good load-bearing capacity: The rectangular and square design gives these steel pipes good load-bearing capacity, suitable for structures that require high hardness and durability.
Smooth and aesthetic surface: Rectangular steel pipes and square steel pipes have smooth surfaces, easy to paint or galvanized to increase corrosion resistance and enhance aesthetics.

3.2 Galvanized steel pipes: They are mainly used for water pipes, cable conduits, fire protection systems or mainly used in civil construction.
Characteristics:
High corrosion resistance: The protective zinc layer helps the steel pipe resist corrosion due to contact with water, air, and other environmental factors, making galvanized steel pipes very durable.
High durability: Galvanized steel pipes have good tensile strength and bearing capacity, suitable for applications requiring mechanical strength.
Long service life: Thanks to the zinc coating, the steel pipe has a longer service life, minimizing maintenance and replacement costs over a long period of time.
Comprehensive protection: The hot-dip galvanizing process ensures that the zinc layer is evenly coated both inside and outside the pipe, providing comprehensive protection against corrosion.
Self-healing ability: The zinc layer has the ability to protect scratches or minor damage by creating a new protective layer when corroded, continuing to protect the steel from environmental penetration.

Easy to process: Galvanized steel pipes are easy to cut, bend, weld and process without losing the protective properties of the zinc layer.

3.3 Seamless steel pipes: They are used to manufacture oil pipelines or in the shipbuilding industry.

Characteristics:
No welds: Seamless steel pipes are produced without welds, making it have a continuous and uniform structure, without weak points at the welds like welded steel pipes.

High strength: Thanks to the lack of welds, seamless steel pipes have better mechanical strength and bearing capacity. It can withstand high pressure and large tensile force without breaking or deforming.
Good heat resistance: Seamless steel pipes have good heat resistance and retain mechanical properties at high temperatures, making them suitable for applications in high temperature environments.
High precision: Seamless steel pipes are manufactured with high precision in size and wall thickness, ensuring product uniformity and stability.
Corrosion resistance: Depending on the type of steel used (such as stainless steel), seamless steel pipes can have high corrosion resistance, suitable for applications in corrosive environments.
3.4 Black steel pipes: With not too high thickness but good durability and bearing capacity, they are difficult to deform or scratch when impacted, along with easy installation, so they are applied in many fields.
Characteristics:
No protective coating: Black steel pipes do not have a galvanized layer or protective coating, making the steel surface susceptible to oxidation when exposed to humid or corrosive environments.
High durability: Black steel pipes have high tensile strength and hardness, can withstand large loads and high pressure.
Easy to process: Black steel pipes can be easily cut, welded, and bent according to the specific requirements of each application.
Lower cost: Compared to galvanized or hot-dip galvanized steel pipes, black steel pipes are often cheaper, suitable for projects that need to save costs.
In addition, there are some other types of steel pipes such as: super thick black steel pipes, black welded round steel pipes, etc.

4. Applications of steel pipes
Construction industry: Steel pipes are used in house frame structures, scaffolding, support columns and other construction works.
Oil and gas industry: Used in oil and gas pipeline systems, and offshore works.
Water supply and drainage systems: Galvanized steel pipes are often used in water supply and drainage systems and wastewater treatment.
Transportation: Used in the production of parts for vehicles, ships, and other means of transport.

Energy: Used in power plants, renewable energy systems, and other energy projects.

5. Summary
Through the above sharing, we see that steel pipes are an important and essential product in many industries, from construction, mechanics, to energy and transportation. With outstanding features such as high durability, good corrosion resistance, and flexibility in processing and installation, steel pipes have become the preferred choice for many different applications.
After more than 28 years, Trung Dung Steel is proud to be a high-end distributor of major steel manufacturing brands such as: Southern Steel, Pomina Steel, Hoa Phat Steel, VAS Steel, Tung Ho Steel, etc. We are committed to always accompanying and building strong trust for customers with the “Prestige – Dedication – Professionalism” of a high-end distributor to bring the best quality steel products quickly to customers.